Final answer:
System or network administrators make further determinations about access to sensitive data within each domain, implementing security measures and assigning user roles and permissions based on the principle of least privilege.
Step-by-step explanation:
The further determinations about access to sensitive data within each domain are typically made by the system administrators or network administrators. These individuals are responsible for managing and securing the sensitive data within their respective domains, setting access controls and permissions, and implementing security measures to ensure the data is kept private.
For example, in an organization, the IT department may have system administrators who can determine who has access to certain databases or files containing sensitive information. They can assign user roles and permissions based on the principle of least privilege, which restricts access to only those who need it.
Additionally, organizations may employ other safeguards such as encryption to secure sensitive data in transit and at rest, firewalls to protect networks from unauthorized access, and auditing systems to monitor and track access to sensitive data.